Roller side bearing



Jan. l, 1924 1,479,517

A. B. sEvERN ROLLER SIDE BEARING 'Filed oct. 2, 1922 ArToRNaYs Patented dan. i924,

'e n rear y farine..

ARTHUR B. SEVERE', OF PITTSBURGH, PENNSYLVANIA, ASSIGN'RfTO A...STUCKI, i PITTSBURGH, PENNSYLVANIA. l n l v 'ROLLER lSIDE` IBEARINQ Application vfiled. October 1922. SeriaLNa 591,721. i

1o all whom t may con-oem:

Cil

Be it known that ARTHUR B. SEVERN, a citizenot the United States, and a resident of Pittsburgh, inthe county (it-Allegheny and -State of Pennsylvania, have. invented a new and useful Improvement in Roller Side Bearings, of which the following is a specification.

becoming rough or recessed, thus interfer-- ing' with the free travel of the rolling element, is prevented, and in fwhi'ch thev roller gravitates to the. center of its'track under its own weight immediately after lcontact Vbetween the upper bearing plateand lthe roller is broken, that is, as soonas, the body of the car lifts sufficiently to b realgcontact with the roller., I Y

special object is to-provide a side bear- .any special devices for moving the roller, either into operative or inoperative posi-y tions. i v

JAnother special Objectis to provide a side bearing having a free roller which will be positively retained in operative relation with the lower bearing surface-and will not beA displaced or lost regardlessof the degree of vertical clearance between the rollerand upper bearing 'plate and at the samegtinne willbe hinderedin its longitudinal'movenientI upon its lower bearing surface yby ,the minimum frictional resistance.

A further special object is-to .provide a bearing in .whichsubstantially the entire lower bearing surface 'will be exposed so as to render. the saine Vreadily self-cleaning.

And it is still -a further special objectief the inventionto providev anv oscillating ref taining frame for the anti-friction roller which is entirely mounted upon the exterior of and is supported by the base plate ofthe lower bearing. surface, and iny which-said frame is so associated with the `renriavining parts that. theroller ispreventedfroin oo n- V The pref tacting the sides thereof y during .normal operation.

Further objects of the linvention are to provide a side bearing of the character named which -will be light ,in-weight'yet sturdy and durable, which willbeieasy to manufacture and repair, which canbe ,pro-

duced at va minimumcost, and which will .function efficiently for the purposes intended.

h In the accompanying. drawings ,Fig l is a plan view with the retaininghframe in .niidfposition showing one einbodinientof the invention; Fig. 2 aA Side iview Vet y,the bearing illustrated in Fi-g. l, said view being partly in vertical section and partly in ele# vation; and an end view partlylin vertical Yseetion and partly v in elevation, illustrating the method offinonnting the oscillating retaining frame upony .the ibase plate. i

[tionv comprises abase plate 1 provided with the apertured attaching; ears or lugs Y r f2 and B fat its opposite ends, the}b ase .plate ing .whichgobvlates thenecessity ,O .using beingsuitably bolted orriveted .to the ,truck bolsterfin the usual in anner. Flanking the sides of the base plate are a pair ,ofppstaiid- Iextend upwardly a short distance., above the yupper surface of the. base plate l, `forming a recessed troughin which theflowerbear- .ingplate 8 `is disposed, the bearing `plate being rigidly secured in positiom upoiigthe base plate l by fnieansof ,suitable fastening devices such as the rivets 9,.,2L1ldi10.

TheV upper surfaceof the vlower bearing plate 8, is -forined witha plane or1jlatinter .mediate portion 111 and the v,upwardly outwardly inclined extremities 12,. 13.' yThe cylindrical yanti-friction roller 1 4 is sup ported by thel lower bearing plate, andy nor- Inally rests lfreely thereupon, the Y, inclined extremities l2 and `13 rendering the froller,

self-centering l under the influencent gravity whenever ythe upper bearingplate lf5 isout of contact therewith, duringfwhichtiine l the roller rests upon the intermediateportioll ll ,Of the bearing plate. .8.- .Thfuprbra-bearerred embodiment of the ,invening plate is attached to the bolster of the car body in the usual and well known way. The upstanding flanges 4 and 5 extend the full length of the bearing and project upwardly to such an extent as to embrace the sides of the roller 14, serving to prevent undue lateral displacement thereof.

Pivotally mountedV upon the trunnions 6 and 7 by Vmeans of the apertured bosses 16 and 17 is a retaining frame indicated as a whole by the reference character F, said tween the upstanding flanges 4 and 5 is slightly greater than the width of the roller 14 so as to permit the roller to freely-move y longitudinally upon the lower bearing plate,

while the distance between the longitudinal side frame members 18, 19 is somewhat greater than the distance between the upstanding flanges. Y construction will prevent the roller 14 coming Vinto contact with the side members of the retaining frame during operation thereof, because the roller will contact either flange 4 or 5 before it has moved laterally a sufficient extent. to be brought into contact withthe side frame members. The inner upper surfaces of the ,transversev bars 20, 21 are somewhat curved as at 22 and 23 so as to contact the periphery of the roller throughout a substantial extent when the roller has beenrmoved to an extreme position such as indicated by the dotted line showing at 24, and the side members of the retaining frame are provided with the openings or recesses 25, 26 for the purpose of reducing the weight thereof.

The operation ofthe device is as follows: The roller 14 normally rests upon the flat intermediate por-tion 11 of the lower bearing plate. Whenever the car body swayssufciently the upper bearing plate 15 is brought into contact with the roller and any swivelling movement of the truck will cause the roller to ride up on the inclined end portions 12 or 13. As the body lifts, contact between the bearing plate 15 and the roller is broken, permitting the roller to gravitate under itsnown weight back tothe flat central .portion 11. The return of the roller occurs immediately upon the lifting of the body and without the use of any auxiliary mechanism or parts. This quick return due to the lack of all lost motion devices and the It is obvious that suchfree mounting of the roller is found to be of great practical importance, and with applicants device is secured by a very simple construction.

Due to the factthat theflat central portion 11 is of appreciable length, the roller 14 will not always come to rest at the. same point but at lvarious points throughout its length and will rest upon various parts of its own periphery, thus assuring substantially uniform wear of both the bearing plate and the roller.

During the longitudinal movement of the roller upon the lower bearing plate, 4the same is prevented from being Ylaterally displaced vby means of the upstanding flanges 4 and 5, and is positively retained in operative position and prevented from being vertically Vdisplaced lor lost by means ofthe retaining frame, saidV frame freely swinging about its pivotal connection furnished by the trunnions 6, 7, and the apertured bosses 16, 1

kThe lower bearing surface isA freely exposed and is unobstructed at the ends thereof so that any dirt or foreign substances deposited thereon will be readily discharged, rendering the bearing self-cleaning. l The bearing described'is of` simple construction, is economical to manufacture, easy to repair, is very durable and eicient in operation, is quickly responsive and self-centering, contains a minimum number of parts and is so constructed as to prevent accumulation of dirt 'or foreign substances upon the bearing surfaces.

I claim: Y

1. A side bearing for railway cars comprising' a supporting base provided with a 'lower bearing surface, a free roller cooperating therewith, an oscillating retaining frame pivoted to the base Asurrounding the roller and rotatable about a fixed axis, the distance between the transverse bars of said frame being less than the diameter of the said roller. l Y x:

2. Al side bearingfor railway cars comprising a supporting base provided with a lower bearing surface and upstanding flanges adjacent said bearing surface, an oscillating lretaining frame pivoted .to .the basev surrounding the roller and oscillating about a icc ia@ y prising a supporting base provided with a longitudinal side bars of the frame being lower bearing surface and upstanding flanges greater .than the distance between said up- 10 adjacent said bearing surface, trunnions prostanding flanges.

jeoting from the said flanges, an oscillating In testimony whereof, I sign my name.

5 retaining frame pivoted to said trunnions the distance between the transverse bars oi2 ARTHUR B' SEVERN said frame being less than the diameter of Witness: said roller, and the distance between the EDWIN O. JOHNS. 

